Rolling-mill.



No. 735,173. I PATENTED AUG. 4, 1903. H. L. THOMPSON.

ROLLING MILL.

APPLIUATION FILED SEPT. 4, 1902.

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H. L. THOMPSON. ROLLING MILL. APPLIOATICN FILED SEPT. 4, 1902.

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HUGH L. THOMPSON, OF WATERBURY, CONNECTICUT.

ldOtLlN'G-MILL.

SPECIFICATION forming part of Letters Patent No. 735,173, dated August 4, 1903.

Original application filed December 16; 1901, Serial No. 86,028. Divided and this application filed September 4, 1902. Serial No.122,039. (No model.)

To all whom it may concern.-

Be it known that I, HUGH L. THOMPSON, a citizen of the United States,residing at Waterbury, New Haven county, Connecticut, have invented certain new and useful Improvements in Rolling-Mills, of which the following is a full, clear, and exact description.

My invention relates to improvements in rolling-mills, and particularly to the general construction including means for providing suitable bearings and supports for the rolls of a mill. The mill is well adapted to roll brass, copper, German silver, &c.

This application is a divisional one from that filed by me December 16, 1901, and se rially numbered 86,028.

The main Objects of my invention are to improve the construction of mills of this general character and provide improved means for adjusting the rolls and the bearings of the same and holding them securely in position and in general to arrange the parts in a manner to secure the most eficient results.

It consists in providing improved counterbalancing means for a roll of the mill and in securing the bearings in place in a new and improved manner.

In the drawings, Figure 1 represents an end elevation, partly in section, of a mill embodying my invention. Fig. 2 is a detail of bearings. Fig. 3 is a vertical cross-section and elevation of a single pair of rolls with the housings and other parts adjacent thereto.

Referring to the drawings, 1 is the upper roll of the mill having a pair of rolls, and 2 is the lower roll, adapted to act in conjunction therewith. These rolls are formed of suitable materialand are usually very heavy in order to provide the necessary strength and results.

3 and 4 are the left and right hand housings, respectively, for the bearings of the rolls of the mill.

5 is a suitable support for the housings, mounted upon abutments 6. As shown in Fig. 1, there is a pit or Opening between the opposite supporting abutments 6 6. The bearings are suitably arranged, as will be seen on inspection of the drawings.

7 is a bearing for the lower roll.

8 is the cooling-saddle for the lower-roll neck.

9 is what may be termed a lifter-bearing for the upper roll.

10 is the upper bearing or rider for the upper roll.

The lower bearings 7 are situated at the bottom of the opening between the two sides of a housing and provided with suitable oilsupply pipes and means for holding the bearings in place. Similar bearings are used for both ends of the rolls.

In Fig. 3 will be seen the construction which I employ for holding and locking the lowerroll neck bearing 7 in place, which consists of the post- 11, having the enlarged upset or shouldered upper end or head portion 12, which projects into the face of the lower-roll neck bearing to act as a dowel. When the post is used alone without the counterbalancing mechanism, it may be readily removed from the housing after the lower-roll-neck bearing has been taken out by simply raising it. This post 11, if desired, may be made hollow and provided at the same time with a suitable duct for the oil-supply for this bearing.

The cooling-saddle 8 for the lower roll is made hollow or in the form of a pan to contain coolingwater for the bearings of the rolls. The lifter-bearing 9 dips down into the same, as shown in Fig. 2. The upper bearing or rider 1O rests uponthe upper portion of the upper-roll neck.

In mills of this character it is necessary at times to vary the distance between the upper and lower rolls to accommodate material of various thickness and of varying degree of hardness. For this purpose the upper-roll bearing or rider 10 is provided with an adjusting-screw 13, which takes into the upper portion of the housing at and bears against the upper portion of the upper-roll-neck bearing 10.

The weight of the parts, as before men- 5 pose the counterbalancing-spring 14, acting no upon the yoke 15 and thence by means of the rods 16 and 17 reaching the bearing 9 for the upper roll, is used. These rods 16 and 17 pass upward through the housings, as shown in the broken-away part of Fig. 1, and into the opening between the sides of the same to connect with the projecting lugs 91 on the lifter-bearing 9 of the upper roll. The rods 16 and 17 are provided with supporting nuts or shoulders 161 171, upon which the lugs 91 rest. This spring 14 is provided with a suitable support 18, which is an adjustable nut on the post 11 and takes against the lower side of the yoke 15. It is mounted upon the post 11,-which, as before mentioned, has the means for locking the lower neckbearing 7 of the lower roll. It will thus be seen that when the pressure applied to the upper roll by means of the adjusting-screw 13 is decreased the tension of the spring 14; tends, by means of the rods 16 and 17, to lift the lifter-bearing 9 of the upper roll, and thus the upper roll and its upper bearing or rider 10. A most simple and efficient counterbalancing means is thus provided. The counterbalancing-springs and yokes are operable independently on each end of the rolls.

The post 11, having the shouldered end or head 12, which acts to lock the lower bearing 7 in place, also serves as a support and guide for the lifter parts. It will thus be seen that the weight of the upper-roll lifters is supported by the heads 12 12 of the posts 11 11, being transmitted through the rods 16 and 17 to the yokes 15, the springs 14 14:, and the ad justing-nuts 18 18 on the posts 11 11. The pit between the abutments provides ample space for the counterbalance and other parts connected therewith. The rods 16 and 17 besides performing the function as lifters for the upper-roll-neck bearing may be made hollow and provide channels for the coolingwater for the bearings. Branch pipes will then be extended from the hollow rod 16 to the various bearings. For instance, 19 is a pipe leading to the upper bearing 10.

20 is a pipe leading to the cooling-saddle 8 for the lower roll. 21 is a pipe leading to the lower bearing. The counterparts of these pipes 22, 23, and 24 will be from the opposite sides of the difierent bearing to the drainpipe 25, so that the cooling-water supply for the difierent bearingsmay be conveyed inward and outward in a convenient manner.

Beneath the mills is provided a drip-pan 26, from which may be conveyed the oil and water, 850., dripping from the various parts of the mechanism, which may be carried off in any suitable manner.

The bearings for the upper rolls may be provided with oil-supply pipes 27, as indicated in the drawings.

' It is desirable that cooling-water should be supplied to the rolls themselves in this mill, and for this purpose I have provided the pipe 28, having depending therefrom above the rolls a series of nozzles 29, from which jets of water may be sprayed upon the rolls as desired.

The advantages of the construction herein set forth will be particularly apparent to one skilled in the art of rolling-mill construction.

What I claim is- 1. In a rolling-mill of the character described, a pair of housings, rolls between the same, the necks of said rolls projecting into said housings, a bearing for the lower roll, a post projecting upward through said housing, the end of said post being enlarged and projecting into a recess in said bearing to retain the latter in position.

2. In a device of the character described, a pair of rolls, bearings therefor, the upper of said rolls being movable up and down, means for adjusting the position of said upper roll, a stationary post, and a yoke and spring movable on said post for counterbalancing the weight of the upper roll and giving an elastic and yielding support therefor.

3. A rolling-millhavingapair of rolls, bearings therefor, housings for said rolls, a post having an enlarged end for securing the lowerroll bearing in place and for supporting the post in the housings, a lifter for the upper roll, and means supported by said post for counterbalancing the weight of the upper roll.

4. A rolling-mill having a pair of rolls, bearings therefor, housings for said rolls, a post for securing the lower-roll bearing in place, a lifter for the upper roll, and means for counterbalancing the weight of the upper roll comprising a spring, yoke and rods connected to said lifter and supported by said post.

5. In a rolling-mill, a pair of rolls, bearings therefor, housings for said rolls, posts having heads resting in recesses and supported by said housings, lifters for the upper roll, rods connected to said lifters, yokes secured to said rods, and springs carried by said posts for supporting said yokes and other parts.

6. Arolling-millhavinga pair of rolls, bear- IOC ings therefor, housings for said rolls, a post having a head for securing the lower-roll bearing in place, a lifter for the upper roll, and a spring, yoke and rods connected to said lifter for counterbalancing the weight of the upper roll, said spring being mounted on and supported by said post.

7. A rolling-mill havingapairof rolls, bearings therefor, housings for said rolls, a post for securing the lower-roll bearing in place, a litter for the upper roll, and a spring, yoke and rods connected to said lifter for counterbalancing the weight of the upper roll, said spring being mounted on said post, and an adjusting-nut carried by said post for supporting said spring.

Signed at WVaterbury, Connecticut, this 2d day of September, 1902.

HUGH L. THOMPSON.

Witnesses:

CHAS. WALTER CHILDs, J. H. D. GRoNNIs. 

